4.Serine
Serine was first isolated in 1865 from sericin, a silk protein, and is a nonessential amino acid and can be synthesized in the body from glycine.Serine is required for the metabolism of fat, tissue growth and the immune system as it assists in the production of immunoglobulins and antibodies.
Food sources of Serine
It is found in meats and dairy products, wheat gluten, peanuts as well as soy products.